This couple appear pretty relaxed, given that they are suspended by a none-too-sturdy-looking cable over what I believe (but cannot prove) is Seymour Creek in North Vancouver. I’m led to conclude that it is probably Seymour Creek mainly from context. There are a couple other Seymour Creek images in the same album; and the water appears similarly calm in the other Seymour Creek photos. A friend has suggested that another possibility is the Lynn Creek headwaters.
There are three other similar images in the same album in UBC’s Uno Langmann Family Collection of Early B.C. Photos. The subjects in each of the other three photos are all different and they are not all as relaxed as this couple seems to be.
The photographs all appear to be made by the same (professional, I assume) photographer. I assume that there was a parallel cable car on which the photographer was perched. Either that, or there was a bridge that ran parallel to where our brave pair were.